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(compute_motion): Handle display table correctly for

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multibyte characters.
This commit is contained in:
Kenichi Handa 1997-07-25 08:01:02 +00:00
parent e3ee2a8a9a
commit 0f706dacee
1 changed files with 22 additions and 28 deletions
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50
src/indent.c
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@ -1327,42 +1327,36 @@ compute_motion (from, fromvpos, fromhpos, did_motion, to, tovpos, tohpos, width,
{
/* Start of multi-byte form. */
unsigned char *ptr;
int len, actual_len;
pos--; /* rewind POS */
ptr = POS_ADDR (pos);
if (c == LEADING_CODE_COMPOSITION)
ptr = (((pos) >= GPT ? GAP_SIZE : 0) + (pos) + BEG_ADDR - 1);
len = ((pos) >= GPT ? ZV : GPT) - (pos);
c = STRING_CHAR_AND_LENGTH (ptr, len, actual_len);
if (dp != 0 && VECTORP (DISP_CHAR_VECTOR (dp, c)))
hpos += XVECTOR (DISP_CHAR_VECTOR (dp, c))->size;
else if (actual_len == 1)
hpos += 4;
else if (COMPOSITE_CHAR_P (c))
{
int cmpchar_id = str_cmpchar_id (ptr, next_boundary - pos);
if (cmpchar_id >= 0)
{
if (cmpchar_table[cmpchar_id]->width >= 2)
wide_column = 1;
hpos += cmpchar_table[cmpchar_id]->width;
pos += cmpchar_table[cmpchar_id]->len;
}
else
{ /* invalid composite character */
hpos += 4;
pos ++;
}
int id = COMPOSITE_CHAR_ID (c);
int width = (id < n_cmpchars) ? cmpchar_table[id]->width : 0;
hpos += width;
if (width > 1)
wide_column = 1;
}
else
{
/* Here, we check that the following bytes are valid
constituents of multi-byte form. */
int len = BYTES_BY_CHAR_HEAD (c), i;
for (i = 1, ptr++; i < len; i++, ptr++)
/* We don't need range checking for PTR because
there are anchors ('\0') both at GPT and Z. */
if (CHAR_HEAD_P (ptr)) break;
if (i < len)
hpos += 4, pos++;
else
hpos += WIDTH_BY_CHAR_HEAD (c), pos += i, wide_column = 1;
int width = WIDTH_BY_CHAR_HEAD (*ptr);
hpos += width;
if (width > 1)
wide_column = 1;
}
pos += actual_len;
}
else
hpos += (ctl_arrow && c < 0200) ? 2 : 4;